If you can't re-home a pigeon is there any benefit to buying an older pigeon?

Sorry for the newbie question. I'm writing a screenplay on Homer's and trying to clarify some things.

Can pigeons be re-homed at all? Someone told me they can't be, after they have an established home.

And if someone were to buy a champion homer, is there any benefit to keeping it? Doesn't it already have an established home? Could it still be used for breeding in SOMEONE ELSE'S loft, or would it just try to fly back home?



Thanks, any and all answers vastly appreciated.

Older pigeons are bought for breeding stock!  They are bought to breed babies that will then be raced to your loft, or sold or given away so other fanciers can use them for racing or for their own purposes.